A device and method for comprehensive evaluation of soil health after remediation of a contaminated site

Abstract

This invention discloses a device and method for comprehensive assessment of soil health after contaminated site remediation, in the field of soil monitoring technology for contaminated sites. The device includes: a data acquisition module for collecting soil data from different locations within the contaminated site; an analysis module for receiving and analyzing the soil data from different locations to obtain soil health results for each area, and controlling the data acquisition module to mark and remediate areas where the soil health results are below a preset health threshold; and an assessment module for receiving the soil health results from each area and performing a comprehensive assessment to obtain the overall soil health assessment result after contaminated site remediation. This invention uses a mobile vehicle and soil data acquisition mechanism to collect soil data from different areas, processes and analyzes the data through the analysis module, and then performs a comprehensive assessment through the assessment module. This method is convenient to operate, highly efficient, and reduces manual labor intensity.

Description

Technical Field

[0001] This invention relates to the field of soil monitoring of contaminated sites, and specifically to a device and method for comprehensive assessment of soil health after contaminated site remediation. Background Technology

[0002] In the current process of assessing soil health after contaminated site remediation, the common practice is to manually collect soil data point by point in each area of ​​the contaminated site using handheld soil testing equipment, and then conduct assessment and analysis based on the collected data. This method is not only cumbersome and labor-intensive, but also has significant drawbacks. When the assessment finds that the soil health of a certain area is substandard, it often relies on manually placing warning signs or simply recording coordinate information, with secondary processing to be carried out by remediation equipment later. First, the efficiency of on-site manual sampling and marking is low, requiring a lot of manpower and time in large areas. Second, recording coordinates before arranging remediation equipment can easily lead to positioning errors, making it difficult for the remediation equipment to accurately locate the original substandard areas, resulting in omissions or repeated work. Third, the separation of sampling and remediation processes prolongs the time interval between problem discovery and remediation implementation, which is not conducive to timely control of contaminated areas. Therefore, we propose a comprehensive soil health assessment device and method after contaminated site remediation. Summary of the Invention

[0003] The purpose of this invention is to provide a device and method for comprehensive assessment of soil health after contaminated site remediation, which solves the technical problems mentioned in the background art.

[0004] The present invention achieves the above objectives through the following technical solutions: A comprehensive assessment device for soil health after contaminated site remediation includes: The data acquisition module is used to collect soil data from different locations in the contaminated site. The analysis module is used to receive and analyze soil data from different regions to obtain soil health results for each region, and to control the data acquisition module to mark and repair areas where the soil health results are lower than the preset health threshold. The assessment module is used to receive soil health results from various regions and conduct a comprehensive assessment to obtain the overall soil health assessment results after the remediation of the contaminated site. The data acquisition module includes: a mobile vehicle body, a soil data acquisition mechanism and a marker remediation mechanism mounted on the mobile vehicle body.

[0005] A further improvement is that the soil data acquisition mechanism includes a shell mounted on a mobile vehicle body, a detection device inside the shell, a telescopic device one mounted on the shell for driving the detection device to rise and fall, a groove at the bottom of the mobile vehicle body, an opening at the bottom of the groove and communicating with the shell, a sealing plate slidably mounted in the groove for closing the opening, a telescopic device two connected to the sealing plate and mounted in the groove for driving the sealing plate to move horizontally, and a spraying device and a drying device respectively mounted on the inner walls of both sides of the shell for cleaning and drying the detection end of the detection device. The bottom of the sealing plate is provided with a liquid collection box, and the sealing plate is evenly provided with through holes communicating with the liquid collection box.

[0006] A further improvement is that the marking and repair mechanism includes a placement frame mounted on the mobile vehicle body and located on one side of the soil data acquisition mechanism. Several sets of marking and repair plates with the same structure are placed on the placement frame. A support frame is provided on the outside of the placement frame. The support frame is movably mounted on the mobile vehicle body. An electromagnetic block for connecting the marking and repair plates is provided on the support frame. The electromagnetic block is connected to a telescopic device three mounted on the support frame and is driven to rise and fall by the telescopic device three.

[0007] A further improvement is that the marking and repair sign includes a sign body, a permanent magnet block located at the top of the sign body for connection with an electromagnetic block, and an insert located at the bottom of the sign body. The sign body has a liquid-filling chamber for storing repair fluid. The insert contains a micro pump, the input end of which is connected to the liquid-filling chamber, and its output end is connected to two sets of spray sections with identical structures. The two sets of spray sections are symmetrically arranged on both sides of the insert. The insert also contains electrical components, including a wireless communication module and a power supply module.

[0008] A further improvement is that a fixed sleeve is fixedly fitted on the top of the outer wall of the insert, and a movable sleeve is rotatably fitted on the outer wall of the fixed sleeve. Two sets of spray sections are respectively arranged on both sides of the movable sleeve. A liquid guiding chamber is provided inside the insert and below the micro pump, which is connected to its output end. The liquid guiding chamber is connected to the spray section through a pipeline. An impeller is provided in the liquid guiding chamber. The impeller is driven to rotate by the repair fluid entering the liquid guiding chamber. The shaft of the impeller and the movable sleeve are connected by a transmission component. The transmission component is used to drive the movable sleeve to rotate when the impeller rotates.

[0009] A further improvement is that the spray unit includes a guide seat, a reciprocating screw is rotatably mounted inside the guide seat, one end of the reciprocating screw passes through the inner end of the guide seat and is connected to a driven gear, the driven gear is rotatably mounted on the guide seat, a fixed gear that meshes with the driven gear is fixedly mounted on the outer wall of the fixed sleeve, a sliding block is slidably mounted inside the guide seat, and the sliding block is threaded onto the outer wall of the reciprocating screw, and a spray nozzle is provided on the sliding block that communicates with the liquid guiding chamber through a pipeline.

[0010] A further improvement is that the spray nozzle is rotatably connected to the sliding block via a rotating shaft, the rotating shaft is provided with a follower gear, and a rack is provided at the outer end of one side of the liquid guide seat and on the moving path of the sliding block. The rack is used to drive the follower gear when the sliding block moves outward to a preset position, so that the rotating shaft drives the spray nozzle to rotate from the vertical spray direction to the horizontal outward spray direction.

[0011] A further improvement is that one end of the guide seat is connected to the outer wall of the movable sleeve via an elastic rotating shaft. A limiting seat is provided at the bottom outer end of the guide seat, and an insertion hole is provided through the limiting seat. A vertical opening is provided through the lower part of the insert for the limiting seat to enter. A contact plate is slidably provided in the vertical opening. A T-shaped movable frame is connected to the top of the contact plate. An insertion rod is provided on the movable frame. The insertion rod is used to insert into the insertion hole when the guide seat rotates to a vertical position. When the insertion rod is in the contact plate upward, the T-shaped movable frame drives the insertion rod to disengage from the insertion hole, thereby causing the elastic rotating shaft to drive the guide seat to rotate from a vertical position to a horizontal position.

[0012] A further improvement is that the top of the movable sleeve is provided with a U-shaped seat that fits against the top of the horizontally oriented guide seat, and the U-shaped seat and the guide seat are connected by a snap-fit ​​structure on opposite sides.

[0013] A method for comprehensive assessment of soil health after contaminated site remediation, utilizing the aforementioned apparatus, includes the following steps: S1: Collect soil data from different locations in the contaminated site using the data acquisition module; Among these methods, mobile vehicles are used to move to different areas of the contaminated site, and soil data is collected from these different areas by a soil data collection agency. S2: The analysis module receives soil data from different regions and processes it to obtain soil health results for each region. It also controls the data acquisition module to mark and repair areas where the soil health results are lower than the preset health threshold. Among them, the analysis module controls the marking and remediation mechanism in the data acquisition module to mark and remediate areas where the soil health result is lower than the preset health threshold; S3: The assessment module receives soil health results from each region and performs a comprehensive assessment to obtain the overall soil health assessment results after the remediation of the contaminated site.

[0014] The beneficial effects of this invention are as follows: This invention can collect soil data from different areas through a mobile vehicle with a data acquisition module and a soil data acquisition mechanism. The data is then processed and analyzed by an analysis module, and finally comprehensively evaluated by an evaluation module. This method is convenient to operate, highly efficient, and reduces the intensity of manual labor. Furthermore, the data acquisition module is equipped with a marking and remediation mechanism to mark and remediate areas where soil data is below a preset level. This not only facilitates accurate location of the area later but also enables auxiliary remediation of the area, achieving timely control of polluted areas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the evaluation device of the present invention; Figure 2 This is a schematic diagram of the data acquisition module structure in this invention; Figure 3 For the present invention Figure 2 Another perspective structural diagram; Figure 4 This is a schematic diagram of the soil data acquisition mechanism in this invention; Figure 5 This is a schematic diagram of the marking and repair plate structure in this invention; Figure 6 For the present invention Figure 5 The structural sectional view in the middle; Figure 7 This is a schematic diagram of the structure of the marking and repair plate used in this invention.

[0016] In the diagram: 1. Mobile vehicle body; 2. Soil data acquisition mechanism; 21. Outer shell; 22. Telescopic device one; 23. Detection equipment; 24. Drying equipment; 25. Spraying equipment; 26. Sealing plate; 27. Telescopic device two; 28. Liquid collection box; 3. Marking and repair mechanism; 31. Support frame; 32. Telescopic device three; 33. Electromagnetic block; 34. Placement rack; 35. Marking and repair sign; 351. Sign body; 352. Permanent magnet block; 35 3. Insert; 354. Liquid chamber; 355. Miniature pump; 356. Impeller; 357. Fixed sleeve; 358. Movable sleeve; 359. Guide seat; 3510. Transmission component; 3511. Reciprocating screw; 3512. Driven gear; 3513. Nozzle; 3514. Follower gear; 3515. Rack; 3516. Limit seat; 3517. Contact plate; 3518. Movable frame; 3519. U-shaped seat. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content. Example 1

[0018] Please see the appendix Figure 1-3 A comprehensive assessment device for soil health after contaminated site remediation, comprising: The data acquisition module is used to collect soil data from different locations in the contaminated site. The analysis module receives and analyzes soil data from different locations to obtain soil health results for each region. It also controls the data acquisition module to mark and repair areas where soil health results are below a preset health threshold (which can be pre-set based on national standards or industry specifications). Optionally, the analysis module in this embodiment includes a controller and a database. The database stores standard health thresholds for each soil data point, such as a health threshold of 6.5-7.5 for soil pH data. During use, the controller receives soil data and compares it with the corresponding data in the database. If the soil pH value in the collected soil data is below the lower limit of the aforementioned health threshold of 6.5, the soil pH health of that region is deemed unqualified. Subsequently, the controller can issue control commands to control the data acquisition module to perform targeted repair and corresponding marking of the soil pH in that region.

[0019] The assessment module receives soil health results from various regions and performs a comprehensive assessment to obtain an overall soil health assessment result after the remediation of the contaminated site. Optionally, in this embodiment, the assessment module receives soil health results from various regions uploaded by the analysis module. For example, in a contaminated site, the measured pH value of the soil in region A is 5.7, which is lower than the preset health threshold of 6.5, so this indicator is judged as unqualified. However, the electrical conductivity is 1.5 mS / cm, which is not higher than the preset health threshold of 2.0 mS / cm, so it is judged as qualified. At the same time, all soil data in region B are within the qualified range. Then, the assessment module processes and analyzes the data in conjunction with location coordinates (such as GPS) to generate a soil health heat map covering the entire contaminated site (for example, using colors such as red, yellow, and green to visually represent the severity of unqualified areas) and outputs a comprehensive assessment report. This comprehensive assessment report includes detailed information on soil data in each region, the overall qualified rate, and targeted management suggestions, thereby achieving a comprehensive and quantitative evaluation of the soil health of the remediated site.

[0020] The data acquisition module includes: a mobile vehicle 1, which can optionally be an unmanned vehicle equipped with a GPS positioning unit and attitude sensors, etc., for autonomously walking along a preset grid path in the contaminated site, and can record the precise spatial coordinates of each sampling point in real time during the walking process, as well as a soil data acquisition mechanism 2 and a marker remediation mechanism 3 installed on the mobile vehicle 1.

[0021] Please see the appendix Figure 2 and Figure 4 Preferably, the soil data acquisition mechanism 2 in this embodiment includes a housing 21 (with a hollow bottom) mounted on the mobile vehicle body 1, and a detection device 23 (specifically, including a protective shell, multiple sets of detection sensors disposed within the protective shell, the detection ends of the detection sensors penetrating through the bottom of the protective shell, and the detection sensors can be selected from one or more combinations of soil heavy metal detection sensors, soil pH electrochemical sensors, soil conductivity sensors, soil temperature sensors, and soil moisture sensors according to actual detection needs) mounted on the housing 21 for driving The telescopic device 22 for raising and lowering the testing equipment 23 (such as an electric push rod, hydraulic cylinder, or pneumatic cylinder) includes a groove at the bottom of the mobile vehicle 1, an opening at the bottom of the groove and communicating with the outer casing 21 (the opening is used for the testing equipment 23 to pass through the mobile vehicle 1 for soil testing when it descends), a sealing plate 26 slidably disposed in the groove and used to close the opening (the sealing plate 26 is horizontally arranged and its size is larger than the opening at the bottom of the outer casing 21), and a telescopic device 27 (such as an electric push rod, hydraulic cylinder, or pneumatic cylinder) connected to the sealing plate 26 and disposed in the groove for driving the sealing plate 26 to move horizontally. The device includes a cylinder or pneumatic cylinder, and a spraying device 25 and a drying device 24 respectively disposed on the inner walls of both sides of the outer casing 21 for cleaning and drying the detection end of the detection device 23. Optionally, the spraying device 25 in this embodiment specifically includes a nozzle fixed to the inner wall of the outer casing 21, a pump body connected to the nozzle through a pipeline, and a storage tank connected to the inlet of the pump body. The storage tank can store deionized water, cleaning agent or organic solvent according to the type of contaminants adhering after detection. The spraying device 25 can remove soil residues and other contaminants adhering to the surface of the detection end. The drying device 24 can be installed on the outer casing 21. The hot air blower or infrared heating tube on the inner wall of the shell 21 is activated after the liquid spraying and cleaning is completed, blowing hot air or radiating heat to the detection end to quickly dry the surface of the detection end and avoid residual moisture affecting the subsequent detection accuracy. The bottom of the sealing plate 26 is provided with a liquid collection box 28, and the sealing plate 26 is evenly provided with through holes that communicate with the liquid collection box 28. When the liquid spraying device 25 cleans the detection end, the cleaning liquid and the soil residue washed down are collected into the liquid collection box 28 through the through holes under the action of gravity, and are collected and stored by the liquid collection box 28 to prevent the cleaning waste liquid from dripping onto the ground and causing pollution.

[0022] A method for comprehensive assessment of soil health after contaminated site remediation, utilizing the aforementioned apparatus, includes the following steps: S1: Collect soil data from different locations in the contaminated site using the data acquisition module; Among them, the mobile vehicle 1 is moved to different locations in the contaminated site, and the soil data collection device 2 collects soil data in different locations in the contaminated site. S2: The analysis module receives soil data from different regions and processes it to obtain soil health results for each region. It also controls the data acquisition module to mark and repair areas where the soil health results are lower than the preset health threshold. Among them, the analysis module controls the marking and remediation mechanism 3 in the data acquisition module to mark and remediate areas where the soil health result is lower than the preset health threshold; S3: The assessment module receives soil health results from each region and performs a comprehensive assessment to obtain the overall soil health assessment results after the remediation of the contaminated site. Example 2

[0023] Please see the appendix Figure 2-3 and Figure 5-7 Based on Embodiment 1, the marking and remediation mechanism 3 of this embodiment includes a placement rack 34 mounted on the mobile vehicle body 1 and located on one side of the soil data acquisition mechanism 2. Several sets of identical marking and remediation tags 35 are placed on the placement rack 34. Optionally, the upper part of the placement rack 34 of this embodiment has several sets of slots arranged in a linear array at equal intervals. Several sets of marking and remediation tags 35 are vertically inserted into the slots of the placement rack 34 at equal intervals. Each set of marking and remediation tags 35 can be used independently. The outer side of the placement rack 34 is provided with a U-shaped support. The support frame 31 is movably mounted on the mobile vehicle body 1. Optionally, in this embodiment, the support frame 31 is slidably connected to the mobile vehicle body 1 using an electric slide rail. The support frame 31 can reciprocate along the length of the mobile vehicle body 1 to facilitate alignment with the marking repair plate 35 at any position on the placement frame 34. The support frame 31 is provided with an electromagnetic block 33 for connecting the marking repair plate 35. The electromagnetic block 33 is connected to a telescopic device 32 (such as an electric push rod, hydraulic cylinder, or air cylinder) provided on the support frame 31 and is driven to rise and fall by the telescopic device 32. When the marker repair plaque 35 is taken, the support frame 31 moves to the corresponding position, and the telescopic device 32 drives the energized electromagnetic block 33 to descend until it contacts the marker repair plaque 35. The marker repair plaque 35 is vertically lifted from the placement frame 34 by electromagnetic adsorption. Then the telescopic device 32 retracts, the support frame 31 moves to the area above the corresponding area, and the telescopic device 32 descends again to insert the marker repair plaque 35 into the soil of the area and maintain a certain depth. Then the electromagnetic block 33 is de-energized and rises to reset, leaving the marker repair plaque 35 in the soil of the area.

[0024] Please see the appendix Figure 5-7Preferably, the marking and repair sign 35 in this embodiment includes a sign body 351, a permanent magnet block 352 (using neodymium iron boron permanent magnets, which magnetically connect with the electromagnetic block 33 when the electromagnetic block 33 is energized) disposed at the top of the sign body 351 for connection with the electromagnetic block 33, and an insert 353 disposed at the bottom of the sign body 351 (its lower end is pointed for insertion into the soil, and barbs can be provided on the outer surface of its lower end). The sign body 351 has a liquid-filling cavity 354 for storing repair fluid. The liquid-filling cavity 354 can be designed as a square sealed cavity as needed, and its inner wall can be coated with an anti-corrosion coating (such as polytetrafluoroethylene). It should be noted that the liquid storage chambers 354 of the several sets of marking and remediation plates 35 placed on the placement rack 34 are different. For example, heavy metal passivating agents (such as phosphate solutions) can be stored for heavy metal pollution, oxidants (such as sodium persulfate solutions) or microbial agents can be stored for organic pollution, and alkaline buffer solutions can be stored for soil acidification. Thus, after the specific pollution type and specific indicators of insufficient health are detected, the mobile vehicle 1 can select the marking and remediation plate 35 of the corresponding remediation liquid type for assembly and insertion according to the analysis results to achieve precise and targeted remediation. The insert 353 is equipped with a micro pump 355 (such as a micro diaphragm pump or a micro peristaltic pump). The input end of the micro pump 355 is connected to the liquid chamber 354, and its output end is connected to two sets of spray sections with the same structure. The two sets of spray sections are symmetrically arranged on the top of both sides of the insert 353. The insert 353 is also equipped with electrical components, including a wireless communication module and a power supply module. The power supply module can use a micro lithium battery or a rechargeable button battery to provide power to the electrical components in the marking and repair plate 35. The wireless communication module can use a low-power Bluetooth module, a ZigBee module or a LoRa wireless module to establish a wireless communication connection with an external controller (such as a handheld remote control terminal or a vehicle central control unit) so that the micro pump 355 in the marking and repair plate 35 can be started and stopped and the spraying time can be remotely controlled to achieve timed, quantitative or on-demand spraying of repair liquid. The marking and remediation sign 35 can not only visually mark areas where the soil health is below the preset health threshold, so that key management can be carried out later, but it can also be left for a long time and sprayed multiple times according to remote instructions to achieve soil remediation in areas where the soil health is below the preset health threshold.

[0025] Please see the appendix Figure 5-7Preferably, in this embodiment, a fixed sleeve 357 is fixedly sleeved on the top of the outer wall of the insert 353. A movable sleeve 358 is rotatably sleeved on the outer wall of the fixed sleeve 357 via a bearing. Two sets of spray sections are respectively located on both sides of the movable sleeve 358 and can rotate together with the movable sleeve 358. A liquid guiding cavity (with a circular vertical cross-section) is provided inside the insert 353 and below the micro pump 355, communicating with its output end. The liquid guiding cavity is connected to the two spray sections respectively through two flexible pipes. An impeller 356 (including a shaft and an impeller sleeved on the shaft) is provided inside the liquid guiding cavity. The impeller 356 is driven to rotate by the repair fluid entering the fluid guiding cavity. The shaft of the impeller 356 and the movable sleeve 358 are connected by a transmission member 3510. The transmission member 3510 is used to drive the movable sleeve 358 to rotate when the impeller 356 rotates. Optionally, the transmission member 3510 in this embodiment includes a transmission rod that is vertically rotatably disposed on one side of the insert 353. One end of the transmission rod is connected to the shaft of the impeller 356 by a bevel gear set (two sets of meshing bevel gears), and the other end is connected to the gear and the toothed ring on the movable sleeve 358 by a gear. When the micro pump 355 pumps the repair fluid into the liquid guiding chamber, the high-speed flowing repair fluid impacts the impeller 356. The rotation of the impeller 356 drives the movable sleeve 358 to rotate through the transmission component 3510. The movable sleeve 358 drives the spraying part, so that the spraying part continuously changes the spraying direction while spraying the repair fluid, thereby improving the circumferential coverage and distribution uniformity of the repair fluid in the soil.

[0026] Please see the appendix Figure 5-7 Preferably, the spray unit in this embodiment includes a guide seat 359, within which a reciprocating screw 3511 is rotatably mounted. One end of the reciprocating screw 3511 passes through the inner end of the guide seat 359 and is connected to a driven gear 3512 (including a shaft and a driven gear sleeved on the outer wall of the shaft, which can be connected to the reciprocating screw 3511 via a bevel gear set). The driven gear 3512 is rotatably mounted on the guide seat 359, meaning a bearing is provided at the connection between the shaft of the driven gear 3512 and the guide seat 359. A fixed gear that meshes with the driven gear 3512 is fixedly mounted on the outer wall of the fixed sleeve 357. A sliding arrangement is provided within the guide seat 359. A sliding block is threaded onto the outer wall of the reciprocating screw 3511. The sliding block is equipped with a spray nozzle 3513 that is connected to the liquid guiding chamber through a pipeline. When the movable sleeve 358 rotates, it drives the guide seat 359 to rotate together, thereby causing the driven gear 3512 to perform circumferential motion relative to the fixed gear. At this time, the driven gear 3512 rotates and drives the reciprocating screw 3511. The rotation of the reciprocating screw 3511 drives the sliding block to move reciprocally in a straight line along the length direction of the guide seat 359, so that the spray nozzle 3513 moves back and forth in the radial direction while rotating with the movable sleeve 358, further improving the remediation range of the soil in the area.

[0027] Please see the appendix Figure 5-7 Preferably, in this embodiment, the spray nozzle 3513 is rotatably connected to the sliding block via a rotating shaft. The rotating shaft includes a mounting base fixedly mounted on the sliding block and a damping rotating shaft that movably passes through the mounting base and is fixedly connected to the spray nozzle 3513. The damping rotating shaft enables the spray nozzle 3513 to maintain its current angle when there is no external force driving it, and to rotate smoothly and stably stay at a new angle when subjected to sufficient torque. The rotating shaft (damping rotating shaft) is provided with a follower gear 3514. A rack 3515 is provided at the outer end of one side of the liquid guide seat (i.e., in the direction away from the axis of the insert 353) and located on the moving path of the sliding block. The length direction of the rack 3515 is parallel to the moving direction of the sliding block. The rack 3515 is used to drive the follower gear 3514 when the sliding block moves outward to a preset position, so that the rotating shaft drives the spray nozzle 3513 to rotate from the vertical spray direction to the horizontal outward spray direction. When the sliding block moves outward along the guide seat 359 under the drive of the reciprocating screw 3511, the follower gear 3514 and the rack 3515 begin to mesh. As the sliding block continues to move outward, the rack 3515 drives the follower gear 3514 to rotate the spray nozzle 3513 together. By reasonably setting the length and number of teeth of the rack 3515, the spray nozzle 3513 is deflected 90° from the vertical downward spray direction to the horizontal outward spray direction. When the sliding block moves in the opposite direction (inward), the follower gear 3514 and the rack 3515... The rack 3515 engages in reverse, causing the spray nozzle 3513 to return from the horizontal direction to the vertical direction. When the spray nozzle 3513 is in the vertical direction, the repair fluid is sprayed vertically downwards, which is suitable for repairing the soil directly below the insert 353. When the sliding block moves to the outside and the spray nozzle 3513 switches to the horizontal outward direction, the repair fluid is sprayed horizontally, which can cover a larger radius of soil area, achieve uniform spraying of different locations in the soil area, and improve the repair effect of the soil in the area.

[0028] Please see the appendix Figure 5-7Preferably, in this embodiment, one end of the guide seat 359 is connected to the outer wall of the movable sleeve 358 via an elastic rotating shaft. Optionally, the elastic rotating shaft includes a mounting seat fixed to the outer wall of the movable sleeve 358, a rotating shaft passing through the mounting seat and the end of the guide seat 359, and a torsion spring sleeved on the rotating shaft. One end of the torsion spring is fixed to the mounting seat, and the other end is fixed to the guide seat 359. In a free state, the torsion spring drives the guide seat 359 to rotate around the rotating shaft to a horizontal position. The bottom outer end of the guide seat 359 is provided with a U-shaped limiting seat 3516, and a through hole is provided on the limiting seat 3516. The lower part of the insert 353 is provided with a through hole for the limiting seat 3516 to pass through. The guide seat 359 enters a vertical opening when folded. The width of the vertical opening matches the outer contour of the limiting seat 3516. A contact plate 3517 is slidably provided inside the vertical opening. The contact plate 3517 is horizontally arranged and its two ends extend to the outside of the insert 353 for contact with the soil surface. A T-shaped movable frame 3518 is connected to the top of the contact plate 3517. An insert rod is provided on the movable frame 3518. The insert rod is used to insert into the insertion hole when the guide seat 359 is rotated to a vertical position. When the insert rod is in the contact plate 3517, the T-shaped movable frame 3518 drives the insert rod to disengage from the insertion hole, and then the elastic rotating shaft drives the guide seat 359 to rotate from a vertical position to a horizontal position. When the marker repair sign 35 is not in use and is placed in the storage rack 34, to avoid the guide seat 359 and its sprinkler unit occupying too much lateral space and to facilitate arrangement and storage, the guide seat 359 can be manually folded downwards to a vertical position. At this time, the limiting seat 3516 just enters the vertical opening. At the same time, the T-shaped movable frame 3518 is pushed downwards to insert the insertion rod into the insertion hole of the limiting seat 3516, thereby locking the guide seat 359 in a vertically folded state and reducing the storage width of the marker repair sign 35. When the marker repair sign 35 is taken out and inserted into the soil, as the insert 353 penetrates downwards, the contact plate 3517 contacts the ground. As the insert 353 continues to sink, the ground... Pushing the contact plate 3517 upwards causes it to slide upwards relative to the insert 353. The contact plate 3517 drives the T-shaped movable frame 3518 to rise synchronously, thereby causing the insert rod to disengage from the insertion hole of the limit seat 3516 and releasing the lock on the guide seat 359. At this time, the elastic rotating shaft drives the guide seat 359 to automatically flip from a vertical position to a horizontal position, so that the spray sections on both sides are horizontally extended, preparing for subsequent rotary spraying operations. Meanwhile, after insertion, the contact plate 3517 remains in close contact with the ground surface. Its large plate area effectively increases the contact support range between the marker repair sign 35 and the ground, ensuring the stability of the marker repair sign 35 during long-term placement.

[0029] Preferably, the top of the movable sleeve 358 in this embodiment is provided with a U-shaped seat 3519 that fits against the top of the guide seat 359 in a horizontal position. The U-shaped seat 3519 and the guide seat 359 are connected by a snap-fit ​​structure on opposite sides. Optionally, the snap-fit ​​structure in this embodiment includes a slot on the inner side wall of the U-shaped seat 3519 and an elastic hook at the corresponding position of the guide seat 359, or includes a recess on the U-shaped seat 3519 and a protrusion on the guide seat 359. The two automatically snap together after the guide seat 359 is rotated into position. After the guide seat 359 is rotated to a horizontal position, the driven gear 3512 on it meshes with the fixed gear. The above method ensures that the fixed gear and the driven gear 3512 maintain a stable meshing state.

[0030] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A device for comprehensive evaluation of soil health after remediation of a contaminated site, characterized in that, include: The data acquisition module is used to collect soil data from different locations in the contaminated site. The analysis module is used to receive and analyze soil data from different regions to obtain soil health results for each region, and to control the data acquisition module to mark and repair areas where the soil health results are lower than the preset health threshold. The assessment module is used to receive soil health results from various regions and conduct a comprehensive assessment to obtain the overall soil health assessment results after the remediation of the contaminated site. The data acquisition module includes: a mobile vehicle body (1), a soil data acquisition mechanism (2) and a marker remediation mechanism (3) mounted on the mobile vehicle body (1).

2. The apparatus of claim 1, wherein, The soil data acquisition mechanism (2) includes a shell (21) on the mobile vehicle body (1), a detection device (23) inside the shell (21), a telescopic device (22) on the shell (21) for driving the detection device (23) to rise and fall, a groove at the bottom of the mobile vehicle body (1), an opening at the bottom of the groove and communicating with the shell (21), a sealing plate (26) slidably disposed in the groove and used to close the opening, a telescopic device (27) connected to the sealing plate (26) and disposed in the groove for driving the sealing plate (26) to move horizontally, and a spraying device (25) and a drying device (24) respectively disposed on the inner walls of both sides of the shell (21) for cleaning and drying the detection end of the detection device (23). The bottom of the sealing plate (26) is provided with a liquid collection box (28), and the sealing plate (26) is evenly provided with through holes communicating with the liquid collection box (28).

3. The apparatus of claim 1, wherein, The marking and repair mechanism (3) includes a placement frame (34) mounted on the mobile vehicle body (1) and located on one side of the soil data acquisition mechanism (2). Several sets of marking and repair plates (35) with the same structure are placed on the placement frame (34). A support frame (31) is provided on the outside of the placement frame (34). The support frame (31) is movably mounted on the mobile vehicle body (1). An electromagnetic block (33) for connecting the marking and repair plates (35) is provided on the support frame (31). The electromagnetic block (33) is connected to a telescopic device (32) mounted on the support frame (31) and is driven to rise and fall by the telescopic device (32).

4. The apparatus according to claim 3, characterized in that, The marking and repair plate (35) includes a plate body (351), a permanent magnet block (352) located at the top of the plate body (351) for connection with the electromagnetic block (33), and an insert (353) located at the bottom of the plate body (351). The plate body (351) has a liquid-filling chamber (354) for storing repair fluid. The insert (353) has a micro pump (355) inside. The input end of the micro pump (355) is connected to the liquid-filling chamber (354), and its output end is connected to two sets of spray sections with the same structure. The two sets of spray sections are symmetrically arranged on both sides of the insert (353). The insert (353) also has an electrical component, which includes a wireless communication module and a power supply module.

5. The apparatus according to claim 4, characterized in that, A fixed sleeve (357) is fixedly sleeved on the top of the outer wall of the insert (353). A movable sleeve (358) is rotatably sleeved on the outer wall of the fixed sleeve (357). Two spray sections are respectively located on both sides of the movable sleeve (358). A liquid guiding chamber is provided inside the insert (353) and below the micro pump (355) and communicates with its output end. The liquid guiding chamber is communicated with the spray section through a pipeline. An impeller (356) is provided in the liquid guiding chamber. The impeller (356) is driven to rotate by the repair fluid entering the liquid guiding chamber. The shaft of the impeller (356) and the movable sleeve (358) are connected by a transmission component (3510). The transmission component (3510) is used to drive the movable sleeve (358) to rotate when the impeller (356) rotates.

6. The apparatus according to claim 5, characterized in that, The spray unit includes a guide seat (359), a reciprocating screw (3511) is rotatably provided inside the guide seat (359), one end of the reciprocating screw (3511) passes through the inner end of the guide seat (359) and is connected to a driven gear (3512), the driven gear (3512) is rotatably provided on the guide seat (359), a fixed gear that meshes with the driven gear (3512) is fixedly sleeved on the outer wall of the fixed sleeve (357), a sliding block is slidably provided inside the guide seat (359), and the sliding block is threadedly sleeved on the outer wall of the reciprocating screw (3511), and a spray nozzle (3513) is provided on the sliding block and communicates with the liquid guiding chamber through a pipeline.

7. The apparatus according to claim 6, characterized in that, The spray nozzle (3513) is rotatably connected to the sliding block via a rotating shaft. The rotating shaft is provided with a follower gear (3514). A rack (3515) is provided at the outer end of one side of the liquid guide seat and on the moving path of the sliding block. The rack (3515) is used to drive the follower gear (3514) when the sliding block moves outward to a preset position, so that the rotating shaft drives the spray nozzle (3513) to rotate from the vertical spray direction to the horizontal outward spray direction.

8. The apparatus according to claim 6, characterized in that, One end of the guide seat (359) is connected to the outer wall of the movable sleeve (358) through an elastic rotating shaft. The bottom outer end of the guide seat (359) is provided with a limiting seat (3516). The limiting seat (3516) is provided with a through hole. The lower part of the insert (353) is provided with a vertical opening through which the limiting seat (3516) can enter. A contact plate (3517) is slidably provided in the vertical opening. The top of the contact plate (3517) is connected to a T-shaped movable frame (3518). The movable frame (3518) is provided with a plug rod. The plug rod is used to insert into the through hole when the guide seat (359) rotates to a vertical position. When the plug rod is in the contact plate (3517) upward, the T-shaped movable frame (3518) drives the plug rod to disengage from the through hole. Then the elastic rotating shaft drives the guide seat (359) to rotate from a vertical position to a horizontal position.

9. The apparatus according to claim 8, characterized in that, The top of the movable sleeve (358) is provided with a U-shaped seat (3519) that fits against the top of the horizontal guide seat (359). The U-shaped seat (3519) and the guide seat (359) are connected by a snap-fit ​​structure on opposite sides.

10. A method for comprehensive assessment of soil health after contaminated site remediation, utilizing the apparatus as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Collect soil data from different locations in the contaminated site using the data acquisition module; Among them, the mobile vehicle (1) is moved to different locations of the contaminated site, and the soil data of different locations of the contaminated site is collected by the soil data collection agency (2). S2: The analysis module receives soil data from different regions and processes it to obtain soil health results for each region. It also controls the data acquisition module to mark and repair areas where the soil health results are lower than the preset health threshold. Among them, the analysis module controls the marking and repair mechanism (3) in the data acquisition module to mark and repair areas where the soil health result is lower than the preset health threshold; S3: The assessment module receives soil health results from each region and performs a comprehensive assessment to obtain the overall soil health assessment results after the remediation of the contaminated site.

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